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Periodic Lattice Porous Structure Produced by Selective Laser Melting: Process, Experiment and Numerical Simulation Analysis

Jianrui Zhang1,2, Min Chi1, Bo Qian1,*, Zhijun Qiu2
1 School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China
2 School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, Australia
* Corresponding Author: Bo Qian. Email:

Computer Modeling in Engineering & Sciences 2020, 125(1), 77-94. https://doi.org/10.32604/cmes.2020.010518

Received 08 March 2020; Accepted 24 June 2020; Issue published 18 September 2020

Abstract

To accurately perform the coupled simulation of temperature field and stress field of complex parts and porous structures under the optimal manufacturing process parameters, three kinds of porous structures with different complexity were designed in this paper. Firstly, ANSYS additive software was used to conduct the stress/deformation simulation of the whole structure under different scanning strategies. Secondly, the optimal scanning strategy for different porous structures was determined, then the experimental preparation was performed, and mechanical properties of compression were tested and studied. The results show that the elastic modulus and yield strength increase with the increase of pole diameter/wall thickness. In addition, the quasi-static compression simulation of different structures was performed, and the compression performance was analyzed based on the experimental data. Finally, the stress concentration region of different structures was obtained.

Keywords

Selective laser melting; numerical simulation; stress field; lattice porous structure

Cite This Article

Zhang, J., Chi, M., Qian, B., Qiu, Z. (2020). Periodic Lattice Porous Structure Produced by Selective Laser Melting: Process, Experiment and Numerical Simulation Analysis. CMES-Computer Modeling in Engineering & Sciences, 125(1), 77–94.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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